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ASN Wikibase Occurrence # 230623
Last updated: 16 June 2020
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Date:31-MAR-2019
Time:14:59
Type:Silhouette image of generic AS50 model; specific model in this crash may look slightly different
Aérospatiale AS 350B2 Ecureuil
Owner/operator:Trans North Turbo Air Limited
Registration: C-GTNV
C/n / msn: 1655
Fatalities:Fatalities: 0 / Occupants: 3
Other fatalities:0
Aircraft damage: Substantial
Category:Accident
Location:Coldfoot, AK -   United States of America
Phase: Manoeuvring (airshow, firefighting, ag.ops.)
Nature:Unknown
Departure airport:Coldfoot, AK (CXF)
Destination airport:Coldfoot, AK (CXF)
Investigating agency: NTSB
Narrative:
The chief pilot reported that the helicopter pilot told him that, while attempting to net a calf during a caribou capture flight, he got within shooting range for the net gun, but the calf suddenly "broke right." He then turned the helicopter to follow the calf, and while turning, the pilot thought the shot would not be possible and that he should set up for another run, but the gunner fired. The pilot heard a "bang," followed by a strong vibration. The pilot landed the helicopter without further incident.
The pilot reported that postaccident examination revealed that one of the main rotor blades had sustained substantial damage, which he assumed was from a net weight.
The chief pilot reported that there were no preaccident mechanical failures or malfunctions with the helicopter that would have precluded normal operation.




Probable Cause: The gunner’s improper net gun firing, which resulted in a net weight impacting the rotor blades.



Sources:

NTSB: https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=20190507X52101&key=1

Accident investigation:
cover
  
Investigating agency: NTSB
Status: Investigation completed
Duration: 7 months
Download report: Final report


Revision history:

Date/timeContributorUpdates
13-Nov-2019 08:21 ASN Update Bot Added

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